JPS6210503A - Petroleum combustion device - Google Patents

Abstract

PURPOSE:To prevent both vertical and horizontal deformation and bending of a linear combustion device, secure complete burning, and also maintain uniform heating at a red hot part by installing vertical ribs at the upper part and horizontal ribs at the lower part in a plane part of a flat combustion chamber. CONSTITUTION:When thermal expansion occurs on wall surfaces of a flat combustion chamber 17 in accordance with their wall temp., expansion quantity is absorbed by elasticity of the ribs owing to the installation of vertical ribs and groove width is only changed and therefore, outward width of the combustion chamber 17 is kept at about the same size. And, as at the middle and lower parts of the combustion chamber, horizontal ribs which are used as reinforcing members to prevent bending of walls of the combustion chamber 17 are placed, bending of the combustion chamber 17 inward and outward in horizontal direction is avoided. At the same time, temp. difference between up and down directions, upward and downward bending of the lower end of the combustion chamber 17 is prevented by the ribs 21 and between a burner plate 16 and the lower end of the combustion chamber 17, gap is not formed and said two parts are closely contacted with horizontality. Therefore, in the combustion chamber 17, uneven flow of fuel and air is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a horizontally long flat oil combustor used for space heating, heating, drying, etc.

BACKGROUND OF THE INVENTION In general, petroleum combustors with flat combustion chambers have the characteristic of being easily deformed due to thermal expansion during combustion. A vertical slit like this or a fourth
The method used was to provide vertical ribs as shown in the figure.

Problems to be Solved by the Invention The conventional combustor described above cannot adequately cope with thermal deformation during combustion, resulting in problems such as abnormal combustion and non-uniform red heat. In other words, in a so-called linear combustor that has a flat combustion chamber, the wall surface of the combustion chamber is heated by the flame and high-temperature exhaust gas, causing thermal expansion. A slit 2 was vertically provided in the upper part of the plane of the combustion chamber 1, or a vertical rib was provided on the side wall of the combustion chamber 3 as shown in FIG. However, in these conventional configurations, although the slits 2 and ribs 4 locally absorb thermal expansion, they do not keep the combustion chambers 1 and 3 flat; they prevent them from curving significantly inward or outward in the horizontal direction. It was impossible. Therefore, due to this curvature, the flow path within the combustion chamber 1.degree. 3 is deformed, resulting in unbalanced flow of fuel and air, leading to combustion abnormalities and producing CO, soot, odor, and the like.

Furthermore, for temperature differences in the vertical direction, slits 2 and ribs 4
It is necessary to absorb the difference in the amount of deformation of This results in a fan-shaped deformation. For this reason, a gap is created between the lower end of the combustion chambers 1 and 3 and the fire pan on which they are placed, and excessive air flows in through this gap, resulting in abnormal combustion. Ta.

The present invention eliminates the above-mentioned conventional drawbacks, prevents both vertical and horizontal deformation and curvature in a linear combustor, provides uniform combustion distribution over the entire width of the combustion chamber, ensures complete combustion, and uniform heating of the red-hot section. It is to be maintained.

Means for Solving the Problems The technical means of the present invention for solving the above-mentioned problems is to provide longitudinal ribs at least in the upper part and horizontal ribs in the at least lower part on the flat surface of the flat combustion chamber. It shall be established.

Effect: With the above means, the thermal expansion of the combustion chamber wall is absorbed by the vertical ribs in the upper part where the temperature is particularly high, and the horizontal ribs suppress the curvature inside and out and up and down in the lower part where the temperature is low. Uniform combustion is ensured over the entire area of the combustion chamber, complete combustion without generating odor or Co, and at the same time uniform heating of the red-hot area is ensured.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In FIG. 2, reference numeral 11 denotes a flat lamp wick, which is provided with a rack 12 on its lower side, and is engaged with a pinion 14 that rotates in conjunction with an operating knob 13 to move up and down within the wick passage 15. On the fire pan 16 provided at the upper end of the wick passage 16, there is placed a horizontally long flat combustion chamber 17 in which a large number of small-diameter air holes 17a and large-diameter air holes 17b are bored at appropriate intervals. It is surrounded by an outer cylinder 18 on the outside. The upper part of the front surface of the combustion chamber 17, in which large-diameter air holes 17b are densely bored and the aperture ratio is set to 1, is a red-hot part 19, and the outer cylinder 18 facing this red-hot part 19 has a glass plate 20a. A window 2o is provided.

Here, on the flat part of the side wall of the combustion chamber 17, as shown in FIG. 1, there are several horizontal ribs 21 that protrude inwardly on the lower side, and vertical ribs 22 that protrude outwardly on the upper side. A plurality of them are formed at appropriate intervals. In the figure, 23 is an exhaust port.

The operation of the above configuration will be explained next.

The fuel vaporized from the lamp wick 11 flows through the air hole 17a.

It burns in the combustion chamber 17 while mixing with the air flowing in from the combustion chamber 17b. The combustion heat heats the wall surface of the combustion chamber 17, and in particular, the red-hot part 19, which has large-diameter air holes 17b closely opened, has a small heat capacity, so it becomes hot and red-hot, and the radiant heat released from this red-hot part 19 is is the glass plate 2 provided in front of it.
It is supplied to the front of the outer cylinder 18 through 0a. The horizontally long and flat wall surface of the combustion chamber 17 heated by the combustion heat undergoes thermal expansion depending on its temperature, and the upper part, where the temperature is particularly high, expands greatly and tends to expand vertically and horizontally.

Since the upper end is open, no pressing force is applied to the vertical expansion, but the horizontal direction is restricted by the side wall of the combustion chamber 1 or the outer cylinder 18, so that no pressing force is applied to the expansion. Added.

However, since the longitudinal ribs 22 are provided here, the amount of expansion is absorbed by the elasticity of the ribs 22, and the outer width of the combustion chamber 17 is kept almost the same only by changing the groove width of the ribs 22. It will be done. In addition, horizontal ribs 21 are provided at the middle and lower stages of the combustion chamber, and these serve as reinforcing materials to prevent the walls of the combustion chamber 17 from curving, so that the combustion chamber 17 does not curve inward or outward in the horizontal direction as in the conventional case. It can be avoided. At the same time, the ribs 21 prevent the lower end of the combustion chamber 17 from curving vertically due to temperature differences in the vertical direction.
6 and the lower end of the combustion chamber 17 are brought into close contact with each other while maintaining the horizontal position without creating a gap. Therefore, during combustion, the combustion chamber 1
The interior of 7 maintains almost the same shape as when not in use,
Stable and complete combustion can be ensured without causing imbalance in fuel or air. Excessive air still does not flow into the vicinity of the fire pan 16, and abnormal combustion does not occur here. In this way, with the combustor having the flat combustion chamber 17, it is possible to ensure uniform and complete combustion without generating Co, soot, odor, etc., and it is also possible to maintain a uniform red-hot state over the entire width, especially in the red-hot section 19, and a large amount of radiant heat can be obtained. It is something that can be done.

Note that even if both the horizontal ribs 21 and the vertical ribs 22 are provided intersectingly over the entire width or height of the flat surface of the combustion chamber 17, the above effect is almost achieved; The ribs 21 have little effect on absorbing thermal expansion, and since the temperature is low in the lower part and the thermal expansion is minute, the vertical ribs 22 have little effect, but rather the horizontal ribs 21 There is a possibility that the opposite effect of reducing the reinforcing force due to the intersection may occur. Therefore, it is more effective to configure the vertical ribs 22 at the upper part of the combustion chamber 1 and the horizontal ribs 21 at the lower part separately so that they do not intersect with each other.

In addition, by configuring the horizontal ribs 21 provided at the lower part of the combustion chamber 17 to be convex inward, the combustion chamber 17
7. A pressure equalization effect can be achieved in the lower part of the interior.

That is, the rib 21 acts as a resistor against the upward airflow within the combustion chamber 17, and has the effect of diffusing the air-fuel mixture in the lateral direction. Therefore, there is no concentrated flame in the center not only during steady combustion but also during ignition, and it is possible to suppress the generation of soot, odor, Co, etc. that are likely to occur in the flat combustion chamber 17 during ignition.

Regarding the shape of the ribs 21 and 22, the vertical rib 22, which absorbs thermal expansion through elasticity, has a narrower width and larger depth, while the horizontal rib 21, which acts as a reinforcing material, has a narrower width and a larger depth.
It is more effective to make the width wider and the depth smaller, but
Depending on the area of the flat part of the combustion chamber 17 and the number of ribs 21 and 22, the present invention is not necessarily limited to this.

Effects of the Invention As described above, the present invention prevents thermal deformation of the combustion chamber by providing vertical ribs at least on the upper side and horizontal ribs at least on the lower side on the flat surface of the flat combustion chamber. However, it is possible to maintain uniform and complete combustion over the entire area of the combustion chamber by eliminating flame concentration and unevenness during ignition and combustion, and to increase the amount of radiant heat dissipation by uniformly heating the red-hot part.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of a combustion chamber in an oil combustor according to an embodiment of the present invention, FIG. 2 is a vertical sectional view thereof, and FIGS. 3 and 4 are main parts of a combustion chamber of a conventional oil combustor. FIG. 17... Combustion chamber, 17a, 17b...
Air hole, 19...Red hot part, 21.22...
··rib. Name of agent: Patent attorney Toshio Nakao and 1 other person17
---Hiroyako 2/, 22-11 Sog 2nd diagram? 3 Figure 3 Figure 4

Claims (3)

[Claims] (1) It has a horizontally long and flat combustion chamber with a large number of air holes bored in the side wall, and an outer cylinder surrounding this combustion chamber, and an incandescent part with a large aperture ratio is provided in the upper part of at least one flat surface of the combustion chamber. A window equipped with a heat ray transmitter is provided in the outer cylinder facing the red-hot part, and a longitudinal rib is provided at least above the front and rear plane part of the combustion chamber, and a lateral rib is provided at least below the front and rear plane parts of the combustion chamber. Oil burners installed in each. (2) The oil combustor according to claim 1, wherein the vertical and horizontal ribs are vertically and separately arranged so as not to intersect with each other. (3) The oil combustor according to claim 1 or 2, wherein the horizontal ribs protrude inside the combustion chamber.